Perry vs DEXUS Lab

Perry is an offline AP exam coach that runs entirely on your phone. No account, no cloud sync, no ads, no tracking — your practice history and any AI tutor chats stay in local storage on your device. WHAT'S INCLUDED, PER SUBJECT • A diagnostic to see where you stand, and a free unit to try the app risk-free • Quick, domain, and adaptive practice drills across every unit • Full-length mock exams with timed MCQ and FRQ sections, a break, and composite scoring • Graphs and data tables in science, statistics, calculus, and economics questions • Free-response (FRQ) practice with rubric-based self-scoring • Spaced review that resurfaces what you're about to forget, powered by FSRS (a modern spaced-repetition scheduler) • Confidence-first practice — rate how sure you are before the answer is revealed, so overconfidence shows up in your stats instead of on exam day • An honest readiness estimate shown as a range, with how much practice it's based on • Local backup and restore, so your progress can move with you to a new device 25 AP SUBJECTS AP Biology, Chemistry, Physics 1, Physics C: Mechanics, Calculus AB, Calculus BC, Statistics, US History, World History, European History, US Government, Comparative Government, English Language, English Literature, Psychology, Microeconomics, Macroeconomics, Environmental Science, Computer Science A, Computer Science Principles, Human Geography, Spanish Language, French Language, Art History, and Music Theory. FREE TO START Every subject includes a free diagnostic, a full free unit, and a practice quota with no time limit or trial period. Try up to three subjects at no cost, complete one full-length mock exam per subject for free, and back up your progress at no charge. PERRY, AN ON-DEVICE AI TUTOR Full Access adds Perry, a tutor model that runs on your device (an optional download, roughly 2.7 GB over Wi-Fi). Ask Perry why an answer is wrong or get coaching on free-response strategy — the conversation never leaves your phone, because there's no server to send it to. FULL ACCESS A single one-time purchase, Full Access, unlocks every subject's full question bank, unlimited mock exams, Perry, and AI-assisted FRQ scoring. No subscription, no recurring charge. Schools and groups issued an access code can enter it in Settings instead of purchasing. HONEST ABOUT WHAT IT IS Perry is a study tool. Its FRQ feedback — whether self-scored against the rubric or AI-assisted — is an estimate meant to guide your practice, not a substitute for your teacher's grading or the real exam. This app is not affiliated with the College Board. AP® is a trademark registered by the College Board, which is not affiliated with, and does not endorse, this app.

DEXUS Lab is an IT and engineering education platform available in 29 languages, built for anyone ready to start or advance a career in technology. Whether you are a complete beginner or looking to sharpen your skills, DEXUS Lab gives you everything you need: structured courses, hands-on projects, an AI tutor that speaks your language, and a progress system designed to keep you moving forward. --- WHAT YOU'LL LEARN --- > IT Support & Networking Master hardware diagnostics, help-desk ticketing, network troubleshooting, and Windows/Linux configuration — the foundation skills every IT employer looks for. > Cybersecurity Learn penetration testing, vulnerability assessment, ethical hacking, and professional security reporting using Nmap, Metasploit, and Burp Suite. > Python & Software Engineering Build algorithmic trading bots, REST APIs, and data pipelines using Python, Pandas, and professional development workflows. > Full-Stack Web Development Design and deploy complete web applications with React, Node.js, PostgreSQL, authentication, and CI/CD pipelines to the cloud. > AI & Machine Learning Train neural networks, fine-tune pre-trained models like ResNet, and deploy AI as production-ready REST APIs. > Applied Robotics Program autonomous robots using ROS, PID control loops, ultrasonic sensors, and Raspberry Pi hardware. --- WHY DEXUS LAB --- - 13 courses, 1,040+ hands-on lessons - 6 capstone projects to build your portfolio - Dexus AI — your personal tutor, in your language - Progress tracking with XP, streaks, and achievement badges - Available in 29 languages — study in your native tongue - Welcoming to learners from every background, everywhere --- SUBSCRIPTION --- DEXUS Lab is free to download. A premium subscription unlocks the complete course library. - Billed through Apple ID at the price shown at purchase - Renews automatically unless cancelled 24 hours before renewal - Manage or cancel anytime in your Apple ID account settings Privacy Policy: https://www.dexatomes.com/privacy Terms of Service: https://www.dexatomes.com/terms